the mechanism of USB hotplug

[kylin]

wawo !
thanks again sir :)
that really benifit me alot :)



On 12/2/05, M. Warner Losh <imp at bsdimp.com> wrote:
> In message: <87ab37ab0512020030u2dcdc3ecj69fa27ec6840ca3b at mail.gmail.com>



> I suspect that if one were to write a hot-plug PCI bus bridge that it
> would mostly work similar to cbb, but with some differences due to API
> differences.

I found that the cbb 's bus number dynamic allocation way s need to
change for the pci bridge  's hotplug ,but not sure ...
acording to the spec
> The USB stuff, btw, is confusingly located in uhub.c.  There are a
> number of bugs in the newbus integration of usb, and various people
> have tried to fix it.  In usbland uhub is the bus, not the usb device,
> which is confusing at first, and poorly documented.  The usb_port.h
> obfuscation also doesn't help.
>
> Warner
>

may be usb inherited from the SCSI way :)
and speak of SCSI 's hotplug ,there r so many layers


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